Home / 8,407.12-11,599.56-5,421.88

Finding the Fourth Proportional to 8,407.12, 11,599.56 and 5,421.88

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Solution

The fourth proportional to 8,407.12, 11,599.56 and 5,421.88 is: 7,480.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,407.12 : 11,599.56 = 5,421.88 : x
  2. Step 2: Convert to fraction form
    8,407.12/11,599.56 = 5,421.88/x
  3. Step 3: Cross multiply
    8,407.12x = 11,599.56 × 5,421.88
  4. Step 4: Simplify right side
    8,407.12x = 62,891,422.37
  5. Step 5: Solve for x
    x = 62,891,422.37/8,407.12
  6. Step 6: Final answer
    x = 7,480.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.